Plants — 23,508 Species

meadow stars

Hesperochiron californicus (Benth.) S.Watson

Hesperochiron californicus (syn. Hesperochiron nanus) is a flowering plant native from western US to northern Mexico.

dwarf hesperochiron

Hesperochiron pumilus (Griseb.) Porter

Hesperochiron pumilus is a flowering plant species native to parts of British Columbia and the western United States.

Ivy-leaved Bellflower

Hesperocodon hederaceus (L.) Eddie & Cupido

Ivy-leaved bellflower, Hesperocodon hederaceus, is a small perennial flowering plant native to Europe that grows in moist acidic habitats.

Marin dwarf-flax

Hesperolinon congestum (A.Gray) Small

Hesperolinon congestum is a small annual wildflower first documented in the San Francisco Bay Area of California in the late 19th century.

Needle-and-thread Grass

Hesperostipa comata (Trin. & Rupr.) Barkworth

Hesperostipa comata is a North American perennial bunchgrass with hygroscopic seed awns that drill seeds into the ground, used as early spring graze.

porcupine needlegrass

Hesperostipa spartea (Trin.) Barkworth

Hesperostipa spartea is a North American perennial bunchgrass with deep roots and seed-drilling awns, used ornamentally and for restoration.

chaparral yucca

Hesperoyucca whipplei (Torr.) Trel.

Hesperoyucca whipplei is a monocarpic yucca native to southwest North America with a famous yucca moth mutualism and history of human use.

water star-grass

Heteranthera dubia (Jacq.) MacMill.

Heteranthera dubia is a variable perennial aquatic plant native to North and Central America, in the Pontederiaceae family.

Blue Mudplantain

Heteranthera limosa (Sw.) Willd.

Heteranthera limosa is a polymorphic annual aquatic plant with a range extending from the central US down to South America, and it is listed as threatened in Minnesota.

Kidneyleaf mud plantain

Heteranthera reniformis Ruiz & Pav.

Heteranthera reniformis is a flowering plant in the Pontederiaceae family native to North America, with protected status in several U.S. states.

western pearlflower

Heterocodon rariflorum Nutt.

Heterocodon rariflorum is the only species in the monotypic genus Heterocodon, an annual bellflower native to wet areas of western North America.

Toyon

Heteromeles arbutifolia (Lindl.) M.Roem.

Heteromeles arbutifolia, commonly called toyon, is a California-native evergreen shrub with edible red pomes and ornamental uses.

parsleytree

Heteromorpha arborescens (Thunb.) Cham. & Schltdl.

Danyang aster

Heteropappus altaicus (Willd.) Novopokr.

Heteropappus altaicus (also called Aster altaicus) is a perennial Asteraceae plant native to Temperate Asia.

tanglehead

Heteropogon contortus (L.) P.Beauv. ex Roem. & Schult.

Heteropogon contortus is a widespread tropical perennial tussock grass with both valuable and harmful traits, and traditional uses.

lemonyellow false goldenaster

Heterotheca camporum (Greene) Shinners

Lemonyellow false goldenaster (Heterotheca camporum) is a North American perennial flowering plant in the Asteraceae family, native to the central United States.

Hoary False Goldenaster

Heterotheca canescens (DC.) Shinners

Heterotheca canescens, hoary goldenaster, is a North American flowering plant in Asteraceae found in northern Mexico and central US Great Plains.

Telegraphweed

Heterotheca grandiflora Nutt.

Heterotheca grandiflora is a bristly yellow-flowered Asteraceae species native to southwestern US and northwestern Mexico, often a roadside weed.

Rayless False Goldenaster

Heterotheca oregona (Nutt.) Shinners

Heterotheca oregona is a bristly perennial herb with four varieties, native to western North America’s low elevation mountain habitats.

sessileflower false goldenaster

Heterotheca sessiliflora (Nutt.) Shinners

Heterotheca sessiliflora, sessileflower false goldenaster, is a variable perennial herb native to western North America.

Camphorweed

Heterotheca subaxillaris (Lam.) Britton & Rusby

Heterotheca subaxillaris, or camphorweed, is a perennial aromatic herb widespread across the US, Mexico, and Belize, with specific pollinator and herbivore interactions.

Hairy False Goldenaster

Heterotheca villosa (Pursh) Shinners

Heterotheca villosa, or hairy golden aster, is a yellow-flowered North American plant with multiple recognized varieties.

Spanish Shawl

Heterotis rotundifolia (Sm.) Jacq.-Fél.

Heterotis rotundifolia is an African flowering shrub used as an ornamental ground cover and for food and medicinal purposes.

American alumroot

Heuchera americana L.

Heuchera americana L., or American alumroot, is a popular ornamental ground cover grown for its varied foliage.